# Henry Preiss

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**Henry Preiss** is a [sailplane](/source/Sailplane) designer. He was a longtime friend and neighbor of [Richard Schreder](/source/Richard_Schreder) and they worked together to develop and build several examples each of the [RHJ-7](/source/RHJ-7)[1] and [RHJ-8](/source/RHJ-8) two-seat sailplanes, and also the [RHJ-9](/source/RHJ-9) and [RHJ-10](/source/RHJ-10). Preiss also finished the Schreder [HP-19](/source/HP-19).[2][3]

The RHJ sailplanes were developed on-the-fly; neither Preiss nor Schreder kept detailed plans or design drawings, and made only what sketches were necessary for the basic engineering validation of the structure.

## References

1. [Sailplane directory](http://www.sailplanedirectory.com/PlaneDetails.cfm?planeID=270) [Archived](https://web.archive.org/web/20110928024022/http://www.sailplanedirectory.com/PlaneDetails.cfm?planeID=270) 2011-09-28 at the Wayback Machine

1. Rogers, Bennett: *1974 Sailplane Directory, Soaring Magazine*, page 36. Soaring Society of America, August 1974. USPS 499-920

1. Said, Bob: *1983 Sailplane Directory, Soaring Magazine*, page 57-58. Soaring Society of America, November 1983. USPS 499-920

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